Fix tests/deterministic_simulations/multiple_lead_lags/sim_endo_lead_lag.mod

A bug was introduced in 440a0e46, erroneously
changing the name of the baseline for a comparison.

The bug was left unnoticed with recent versions of MATLAB and on Octave,
because the first array in the ensuing comparison had zero line, and because of
automatic broadcasting, the error message was not triggered.

However, the bug was exposed on MATLAB < R2016b.

(cherry picked from commit 8d4f5fbd)

tests/deterministic_simulations/multiple_lead_lags/sim_endo_lead_lag.mod

@@ -58,7 +58,7 @@ if max(abs(base_results.oo_.exo_simul(1:end-base_results.M_.maximum_lead-base_re
 end
 
 clear base_results;
-base_results_aux_vars=load(['sim_exo_lead_lag_aux_vars' filesep 'Output' filesep 'sim_exo_lead_lag_aux_vars_results.mat']);
+base_results_aux_vars=load(['sim_endo_lead_lag_aux_vars' filesep 'Output' filesep 'sim_endo_lead_lag_aux_vars_results.mat']);
 if max(abs(base_results_aux_vars.oo_.endo_simul(strmatch('z_backward_lag_2',base_results_aux_vars.M_.endo_names,'exact'),1:end-base_results_aux_vars.M_.maximum_lead) -...
     oo_.endo_simul(strmatch('AUX_ENDO_LAG_2_2',M_.endo_names,'exact'),1:end-M_.maximum_lag)))>1e-8 
     error('Translation of endogenous variables is wrong')